Detachable heel.



C. P. MAHER.

DETACHABLE HEEL. APPLlcATloN FILED Auaiz, 191e.

Patented July 3, 1917.

i u I WWTF@ @TAT Ii CHARLES PATRICK MAI-IER, OF MONTREAL, QUEBEC,CANADA.

DE'IAGI-IABLE HEEL.

reenter.

Specication of Letters Patent.

Patented `duly 3, 1.9 1 7.

Application filed August 28, 1916. Serial No. 117,277'.

To all whom t may concern.' Be it known that I, CHARLES PATRICK MAKER, asubject of the King of Great `Britain, and resident of 1836 Hutchisonstreet, in the city of Montreal, Province of Quebec, Dominion of Canada,have invented certain new and useful Improve ments in Detachable Heels,of which the following is the specification.

The invention relates to improvements in detachable heels as describedin the present specification, and illustrated in the accompanyingdrawings that form part of the same.

The invention consists essentially in the novel means of fastening theremovable piece and the arrangement of the pieces in relation to thepermanent attachment to the shoe.

rlhe objects of the invention are to devise a simple form of heel inleather, rubber or other material, that may be detached in a moment andreplaced by a new tread piece or one from the other shoe, to effecteconomy in the use of rubber or such like heels and generally to providea serviceable and durable detachable heel.

In the drawings, Figure 1 is a plan view of the piece adapted to berigidly secured to shoe, showing one member of the fastening device.

Fig. 2 is a plan view of the detachable tread piece showing the othermember of the fastening device.

Fig. 3 is a cross sectional view through the upper piece on the line A-Bin Fig. 1.

Fig. 4 is a cross sectional view through the upper piece on the line C-Din Fig. 1.

Fig. 5 is a cross sectional view through the upper piece on the lineE-F' in Fig. 1.

Fig. 6 is a longitudinal sectional view of the upper piece on the lineG-l-l in Fig. 1.

Fig. 7 is a cross sectional View of the tread piece on the line I-J inFig. 2.

Fig. 8 is a cross sectional view of the pieces assembled showing thefastening.

Fig. 9 is a plan view'of the locking bolt.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the tread piece 1 is made of rubber, leatheror other suitable material and is recessed to receive the star-shapedplate 2 having the outwardly projecting and inwardlyturned lugs 3 inpairs, the points of the star extending between and beyond said lugs,said plates be ing fastened in any appropriate manner to said treadpiece, as in rubber pieces it will be secured in the molding, in leatherlikely by a screw et as shown. This plate 2 is shown as of star shape7but it may be made many different shapes and have the lugs variouslyarranged.

The nailing piece 9 is formed with a plate recess 10 having the ledges11 on which the plate 12 is supported, said plate having the lug holes13 corresponding to the number and arrangement of lugs from the treadpiece and here shown in pairs, and in addition the central screw hole14, the border nail holes 15, and the catch hole 16 near the front, theslot 17 in front of said hole in the edge and in the center of thelarger edge slot 18. The plate 12 is fastened to the nailing piece 9 bythe screw 2O and over the cushion spring 21, preferably encircling saidscrew.

The screw 20 also extends through the locking bolt 22 in the form of aslotted plate, having the central guiding slot 23 for the screw, theside edge slots 24 for unlocking purposes and the spring catch slot 25behind the upwardly turned thumb flange 26 and the downwardly turnedshield 27. The spring catchv 28 is securely riveted to the under side ofthe said locking bolt to the rear of the slot 25 and is formed with afront flange 29 and a cross ridge 30 forming the catch proper.

The recess in the said nailing piece 9 is closed in at the front endunder the plate 127 except in the center, where it is open to permit thedepression of the spring catch 2S and this opening ordinarily isprotected by the shield lug from the plate 12.

rlhe parts have now been described in detail and in order to set forththe invention clearly the'operation and use will be now explained.

The nailing piece 9 may be made of leather or rubber as desired thoughin rubber heels it is preferable that the two parts shall be made of thesame material, especially as the nailing piece provides an eXtra cushionintermediately arranged between the tread piece and the shoe proper.

The nailing piece 9 is secured through its nail holes to the upperlayers of the shoe heel as customary in attaching rubber heels to shoes.This action further secures the plate 12 to said nailing piece and alsoto the shoe,v thereby making a rigid fastening CJI member7 which stillcan be removed and remain intact to be secured to a new pair of shoes.

The tread piece is fastened on by inserting its projecting lugs into thelug holes in the plate 12 and thrusting the locking bolt back intoplace, the said catch ridge of the spring catch snapping into thecorresponding slot in said plate l2.

To remove the tread piece the front flange of the spring catch is pusheddownwardly and thc thumb lFlange of the locking bolt grasped by thethumb or an instrument and the said bolt Withdrawn tov the limit of itsoutward travel, which action has the effect of releasing the lockinglugs7 thus permitting the removal of the tread piece.

lVhat I claim is A detachable heel in two parts, the upper part having arecess lea-ding inwardly from the frontend, a permanent platecountersuuk in the heel part surface around said recess andrigidlysecured having lugholes therethrough arranged in pairs1 a sliding `platehaving slots in the sides intermediate of its length in alinement withsaid lug holes, a central pin slot in the inner portion and a springtongue at the front end forming an automatic latch mechanism inconjunction With a corresponding slot in said permanent plate, aI screwpin extending through said pin slot into said heel part, a helicalspring encircling said screw pin in said recess and holding said slidingplate resiliently to said permanent plate, a heel part 'forming thetread piece, and a star shapedA plate countersunk in said tread andrigidly secured and having outwardly eX- tending and inturned lugsVregistering with said lug holes.

Signed at'Montreal, Quebec, Canada,'this 22nd day of August 1916. Y

CHARLES PATRICK MA1-IER.

lVitnesses GEORGE D. QUILLIAM, V. I. FETHERSTONHAUGH.

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, C.

